reservoir

Meanings

• a large or extra supply of something
  • "a reservoir of talent"
• lake used to store water for community use
• tank used for collecting and storing a liquid (as water or oil)
• anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies
  • "an infectious agent depends on a reservoir for its survival"

Synonyms

artificial lake, man-made lake, source